Yeah just like stated above I doubt the P4 is ending real soon. The P3 is still in demand as are the P4's. Once the P5 is released I would expect DJI to ramp things down on the P4's or offer other versions like the P3's to keep selling them?
You never know.. We have all seen products that we love and would continue to buy get phased out for no reason at all. It will be interesting to see what the P5 will offer?